VX Heaven

Library Collection Sources Engines Constructors Simulators Utilities Links Forum

Self-crypting script files

roy g biv
29a [7]
February 2003

[Back to index] [Comments]


When thinking about the number of encrypted macro viruses, it is strange that there are not so many encrypted script viruses. I have no answer for why it is so. ;) Anyway, here I present a simple engine for encrypting VBScript and JScript files. It uses a variable skip-code encryption with oligomorphic decryptor. The cryptor supports variable spacing, random variable names, random variable case, random keyword case (VBScript only), and variable skip-codes with constant packet size. It can be used recursively, too.

[Read the article]

By accessing, viewing, downloading or otherwise using this content you agree to be bound by the Terms of Use! aka